Purple is this season's IT color - for men! Robert Downey Jr. was his usual dapper self at "The Avengers" premiere in Los Angeles on Wednesday. He wore a striking purple suit on the red carpet.

Robert and his wife Susan enjoyed their first date night since the birth of their son Exton in February. The couple wore custom-made amethyst jewelry in honor of their son's birthstone. Whatever their reason for wearing it, we love it!

The "Iron Man" isn't the only male celeb who's wearing one of this season's trendiest colors. Mark Ruffalo also showed up to the event in purple.

See more photos of men passionate about purple...